OpenOffice Calc and Writer Chart Users -- This Is for You
This looks pretty fantastic. New features for charting coming in OpenOffice.org 2.4.
http://blogs.sun.com/GullFOSS/entry/new_chart_features_in_openoffice
and more here: http://wiki.services.openoffice.org/wiki/Chart2/Features2.4
To try it out, click here for the announcement and download info.
Here's just one of the new features, quoting from this post.
Equation and Value of R² for Trend Lines
Now, it is possible to display the equation for a trend line (regression curve) next to it. The formula object can be moved around, formatted with a number format, font and graphical formatting.
Alternatively, or in addition, the correlation coefficient R² can be displayed in the formula object.

